Patent US3113052A successfully refreshed from Google Patents.
US3113052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making aluminum base alloy extruded product
Assignee: Alcoa Corp
•
Filing: 1960-07-05
•
Granted: 1963-12-03
•
Expires: 1980-07-05
Abstract
No abstract record available.
Inventors
- 👤 Kenneth H Schneck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:42
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/04; C22F1/05; B; B21; B21C; B21C23/00; B21C23/01; B21C29/00; C22C; C22C21/00; C22C21/06; C22C21/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
THE METHOD OF PRODUCING SOLUTION HEAT TREATED EXTRUSIONS OF AN ALUMINUM BASE ALLOY COMPOSED ESSENTIALLY OF ALUMINUM, 0.43 TO 1.40% MAGNESIUM AND 0.24 TO 0.80% SILICON AND IN SUCH PROPORTIONS AS TO FORM FROM 0.75 TO 2% MAGNESIUM SILICIDE, SAID HEAT TREATED EXTRUSION EXHIBITING SUBSTANTIALLY NO RECRYSTALLIZED GRAIN STRUCTURE, SAID METHOD COMPRISING PROVIDING AN INGOT OF THE ALLOY, PREHEATING SAID INGOT AT 800 TO 1050*F. FOR 3 TO 20 HOURS, COOLING SAID INGOT TO ROOM TEMPERATURE AT A RETARDED RATE WHEREBY PRECIPITATION OF AT LEAST A PORTION OF THE DISSOLVED CONSTITUENTS IS INDUCED, RAPIDLY REHEATING SAID INGOT TO 800 TO 850*F., EXTRUDING SAID HEATED INGOT, SOLUTION HEAT TREATING SAID EXTRUDED PRODUCT AT 900 TO 925*F., AND QUENCHING THE PRODUCT.
Claim 2
Independent Claim
119 words
THE METHOD OF PRODUCING SOLUTION HEAT TREATED EXTRUSIONS OF AN ALUMINUM BASE ALLOY COMPOSED ESSENTIALLY OF ALUMINUM, 0.43 TO 1.40% MAGNESIUM AND 0.24 TO 0.80% SILICON AND IN SUCH PROPORTIONS AS TO FORM FROM 0.75 TO 2% MAGNESIUM SILICIDE, SAID HEAT TREATED EXTRUSION EXHIBITING SUBSTANTIALLY NO RECRYSTALLIZED GRAIN STRUCTURE, SAID METHOD COMPRISING PROVIDING AN INGOT OF THE ALLOY, PREHEATING SAID INGOT AT 800 TO 1050*F. FOR 3 TO 20 HOURS, COOLING SAID INGOT TO ROOM TEMPERATURE AT A RETARDED RATE WHEREBY PRECIPITATION OF AT LEAST A PORTION OF THE DISSOLVED CONSTITUENTS IS INDUCED, RAPIDLY REHEATING SAID INGOT TO 800 TO 850*F., EXTRUDING SAID HEATED INGOT, SOLUTION HEAT TREATING SAID EXTRUDED PRODUCT AT 900 TO 925*F., AND QUENCHING THE PRODUCT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |